Linotype-machine.



PATENTED AUG. 8, 1905.

P. G. WOLF?.

NOTYPE MACHINE. oATIoN FILED MAB.. 22. 1905.

APPLI UNITED STATES PATENT oFFIoE.

PAUL G. WOLFF, OF BALTIMORE. MARYLAND, ASSIGNOR TO MERGEN- THALER LINOTYPE COMPANY, A CORPORATION OF NEI/V YORK.

LINOTYPE-NIACHINE.

Specification of Letters Patent.

Patented Aug. 8, 1905.

Application filed March 22, 1905. Serial No. 251,414.

T0 all whom t may concern:

Be it known that I, PAUL Gr. WOLFF, of Baltimore, State of Maryland, have invented a new and useful Improvement in Linotype- Machines, of which the following is a specification.

My invention has reference to means for automatically preventing the action of the metal-delivering pump in the event of the matrix-line presented to the mold being too short to permit the line to be properly justified and is designed as an improvement on the mechanism illustrated in United States Letters Patent No. 659,865 to G. A. Bates. In the Bates mechanism a spring tends to hold a stop device normally in position to prevent the action of the pump-actuating lever. The end of the matrix-line operates against a sliding jaw, which in turn acts through an intermediate lever on the stop device, so that if the line is justified and elongated tothe proper length it will push the jaw backward against the resistance of the spring to permit the free action of the pump. This arrangement necessitates the forcing back of the movable jaw by the matrix at the end of the line as it is lowered into the casting position in front of the mold. The resistance of the jaw frequently displaces the matrix and otherwise causes trouble.

The aim of the present invention is to overcome the resistance on the part of the jaw and its actuating-spring to permit the free descent of the matrix-line between the jaws. To this end I utilize the movable melting-pot or any other part of the machine having a similar movement to hold the pump-stop normally out of action, releasing it at the proper time, so that it may act in the event of the matrix-line being abnormally short.

The accompanying drawing represents in perspective my improved devices applied to a linotype-machine, the drawing being limited to those parts immediately associated with the pump-stop.

Referring to the drawing, A represents a portion of the rigid main frame, B B the two opposing jaws between which the line of matrices is lowered to the casting position in front of the mold, and O the vertical wheel or disk in which the mold D is mounted.

E is the melting-pot, arranged to move forward and backward in order to present its delivery-mouth to and retract it from the rear face of the mold, which is closed thereby and filled with metal therefrom.

F is the upper end of the pump-plunger for delivering metal from the pot, G the risingand-falling lever for operating the plunger, and H the pump-stopping latch, mounted on a fixed pivot It. so that it may be turned` into or out of the path of the projection on the pump-lever.

I is a lever mounted on a fixed pivot c', with one end jointed to the stop H and the other end arranged in the rear of the jaw B, so that when a matrix-line seated between the two jaws is of the full length required the jaw B will be held back and the lever I caused to hold the stop H in an inoperative position, a1- lowing the lever G to fall and actuate the pump to deliver metal into the mold.

J is a spring acting on the stop H and tending to throw the same into operative position.

So far as described the parts are essentially the same as those in the Bates patent above referred to.

K represents an arm secured rigidly to the top of the movable pot and provided with a screw 7e, adapted to act against the stop H and hold the same backward out' of action whenever the pot is retracted from the casting position. When the pot advances prior to the casting action, it relieves the stop H, which will under the influence of spring J ad' Vance and arrest the pump unless prevented from so doing by the lever I and jaw B, which will act for this purpose only in the event of the matrix-line being of full length, so as to hold the jaw B outward to its extreme position at the right. When the pot retreats subsequent to the casting action and before the matrix-line is lifted from the position between the jaws, the arm K again holds the stop H backward, so that the spring is prevented from acting through the intermediate parts to slide the jaw B inward beyond its operative position. In other words, the projection on the pot prevents the jaw from being carried inward and leaves it in its normal or operative position, so that the nextline of matrices may descend freely to its place. It is this relieving of the jaw B from the inward pressure and inward movement that gives Value to `my improvement.

Manifestly the details may be varied at will, provided there is no essential departure from the mode of action above described.

I/Vhile I prefer to employ the movable jaw B as a connection between the matrix-line and the lever, it is manifest that the only practical requirement is that the lever shall be controlled by the matrix-line, and this result can be secured by the employment of a stationary jaw with a movable bar or rod therethrough, as shown in dotted lines in the drawing, acting at one end on the'lever and at the opposite end on the matrices. This movable rod or bar is in the combination shown the equivalent ofthe jaw.

l. In a linotype-machine, a pump-stop, a

spring tending to cause its action, devices acted upon by the matrix-line to hold it out of action, and a power-driven device to prevent the action of the spring, substantially as described and shown.

2. In a linotype-machine, the combination of the movable jaw B, lever I, pump-stop H, a spring tending to cause the action of the stop, a movable melting-pot, and a device carried thereby to prevent the action of the stop.

v 3. The vcombination of the pump-lever G, stop H, spring'I, lever I, jaw B, and controlling-arm K, carried by the movable pot. 1n testimony whereof I hereunto set myhand, `this 9th day of March, 1905, in the presence of two attesting witnesses.

PAUL G. VVOLFF.

Witnesses:

JOHN S. SULTZER, FREDERICK W. STRow. 

